closing vs prelims

closing

adj
  • Pertaining to the finish or ending of a series of events; occurring at the end or after all others. 

noun
  • In morphology, the erosion of the dilation of a set. 

  • The final procedure in a house sale, when documents are signed and recorded. 

  • The act by which something is closed. 

  • The end or conclusion of something. 

prelims

noun
  • The preliminary front matter of a book, i.e. all content preceding the main text or work itself. 

  • Preliminary examinations taken as a whole, as sat by an individual or year group. 

How often have the words closing and prelims occurred in a corpus of books? (source: Google Ngram Viewer )